quixotic (adj.)

"extravagantly chivalrous," 1791, from Don Quixote, romantic, impractical hero of Cervantes' satirical novel "Don Quixote de la Mancha" (1605; English translation by 1620). Don Quixote as the type of anyone attempting the impossible or holding impossible ideals is in English from 1670s. His name literally means "thigh," also "a cuisse" (a piece of armor for the thigh), in Modern Spanish quijote, from Latin coxa "hip" (see coxa). Related: Quixotical; quixotically.